<!DOCTYPE html>
<body></body>
<script src="../include.js"></script>
<script>
test(() => {
    let host = document.createElement("div");
    let shadow = host.attachShadow({ mode: "open" });
    shadow.innerHTML = `<p id="foo">Hello</p><span id="bar">World</span>`;
    let foo = shadow.getElementById("foo");
    let bar = shadow.getElementById("bar");
    println(foo.textContent + bar.textContent);
});
</script>